Updated black version (#195)

Author: vfdev-5

CONTRIBUTING.md

@@ -113,11 +113,11 @@ To add a new template,
 
   ```sh
   # install code formatting dependencies
-  bash .github/run_code_style.sh install
+  bash scripts/run_code_style.sh install
   # format the codes
-  bash .github/run_code_style.sh fmt
+  bash scripts/run_code_style.sh fmt
   # lint the codes
-  bash .github/run_code_style.sh lint
+  bash scripts/run_code_style.sh lint
   ```
 
 _NOTE: Even if you have a half-completed/working PR, sending a PR is still a valid contribution and we can help you finish the PR._

scripts/run_code_style.sh

@@ -10,5 +10,5 @@ elif [ $1 == "fmt" ]; then
     isort . --profile black
     black . -l 80
 elif [ $1 == "install" ]; then
-    pip install "black==20.8b1" "isort==5.7.0" flake8
+    pip install "black==21.12b0" "isort==5.7.0" flake8
 fi